Romney works for it over '9-9-9'

Mitt Romney just broke the debate rules and started questioning Herman Cain about the details of his 9-9-9 plan, with a clear goal of tripping up his fast-rising rival and also looking like he's willing to fight for the nomination.

Romney: "Often times, simpler is better...Herman are you saying that the state sales tax will also go away?"

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Cain: "No, that's an apple. We're replacing a bunch of oranges."

After a bit of a back and forth, Romney replied, "I'm gonna be getting a bushel basket that has apples and oranges in it" under 9-9-9.

When it came to Newt Gingrich, he was asked why he's said the plan would be hard to defend, and he replied, "Well you just watched it," to applause.